Burnishing-machine.



warren FREDERICK .Il/L .FURBEB F REVEBE, MASSACHUSETTS, ASSE MACHINERY COMPANY, OF PATERSGN, E'Ellllf JERSEY, CGRPt-XT'L.

JERSEY.

Specification el? Letters Patent.

Application lci't November 2.9, 1908. eral No. let.

To all whom z'' may concern:

15e it known that I, Finanzieren M. linnnnn, a citizen lof the United States, residing at leachmont, Revere, in the county of Suf iolk and Slate of Massachusetts, have 'invented certain lmprovenients in Bnrnishing- Machines, of which vthe following description, in connection vith the accompanying drawings, is a specification, like reference i0 characters on the drawings indicating like parts in the several figures. l

This invention relates to lanrnihing machilies,l and particularly to the type oli' lournishing machines employed in the manufacture of boots and shoes for hnrnishing the edge' of the sole. These machines are frcquently termed in the trade edge setting machines their opcration'being known as setting the edge of the sole. Themres cnt invciition is especially concerned With that type of bnrnishing or edge setting ma chines in which the tool is given a rapid toand-fro motion.

The invention has for its object, broadly, to provide a machine of the character indicated which shall be capable of producinga better quality and a greater quantity of work than the machines heretofore used; which shall not, he subject: to as rapid wear and deterioration as previous machines; and which shall lic easier 'for the workman lo use.

The high speeds at which edge .sellingl nnb chincs are net :cssarily operated has resulted, in thc, constructions heretofore employed, in producing excessive viliralion ol lhc entire machine` particularly after the licarin;v or 'friction surfaces hare become worn. Such riln'ation is not only olijeclionahle because 40 ol. the attendant noise, hul; more partienlarly, because ol' the increased strain placed upon the operator. ln order properly to liurnish (he solo c lge,' tl\e operatornnisthohl the ,shoe up against the tool with considcralilc pressure; and il is obvious that cX- ressive vibration ol the machine will greatly increase the energy and skill required properly to hohl and guide the shoe. lt is an important olijccl olt this invention to reduce 'such vili ation to a minimum. To this' end I'the mechanism ihat generates the oscillating motion necessary to operate the tool placed in the hase of the machine frame, and the oscillating motion is 'transmitted to the tool at the head of the iframe, this 5.22 rangement the heavy rapidly inoringr gna are located in the nosition least :lari the transmission olff rilora't,` chine frame. lilltneover, lheee merged in a body of oil which tl twoold purpose of directly damp n vibrations of the frame, and aise oil rc the wear of the iction surfe. to a n muni.

In the machines heretofore eine.. driving shaft has usually been oye the rate of about 52500 reiol Y nte; and it has heen 'iooni ii i, operate these machines at speeds "ha higher for the reason 'that noch spe/edc l' in greatly increafied vibration of the n machine and in Verf' rapid dolorioratie?1 o the operatingr n'iechanism- Prior edge setting' machines oiithe type in which the toolis given an. oscillatinaI tion Ydigitally have been iif'm-iil l0 only one complete oscillation, or two SW1 19in to the tool, at each revolution of the drie ing shaft. En these edge soiling machines therefore the edge setting iron has been dri ven at the rale of about 250i) osciil or 5000 strokes or :swings per ininnle. it is considered that the chiei pai-pone rubbing movement imparted to the ed, lying tool is lo lay down the nap edge and to give the snr'ace ay sint'ni h haria liuish, it will he oln'iouw t; l. the g.; ler the rale of oscillation of the tool, the greater will he the rubbing and pol ling); action, and conseipicntly the less will he the time rea@ quired to properly set or linrn surface.

lt is an important object oi this invention to provide an rde'e setting;l machine in which thc operating' speed oi the tool shall greatly 9 exceed that at which the. tools innclincs oi' this character have heretofore been on erated. fin the forni ol' the invention :shown in the drawings this resnlt is ohtainei'l .lf-y operating a toggle mecha iism from a pin driven by the main shaft and transmittimey the motion ol the toggle to the edge set-- ting iron. rllie arrangement such tl the tog-nic is straightened and lirolicn twice enr ing each revolution of the shaft. therefore is `given two complete oaciliatiora, or four swings, at each revolution shaft; iii the sha" The 'tool itl? Speed tif '25109. revohftnspilpdr meetelt-'bhw tool will niake 10,000 swings, or just twice the )acampada e. 1.,'n :niet i t1oi1` -1s` therefore dou 'le' `w i the shaft speed unchanged.

for' oper ing on t e orert of the soo edge and another tool cisti lhtthpeffoi* tools into' and:outbfperittiveosifti'mftii using fanma'ehineeai thisoty ethefioperator f'usnfalifyf/startsfthe hurriish 'tioperatiiolilfat thei l'shauii'caofwthef, sho'einar othe'fhee i and when: lthefltbobaigrives ambie; iaiture oi thel shankfandforeprtkheiuniokeithftoolf'eare rier' by pressing against it with his hand Thiswtypev@machinerie/o 'eniedfthevobjeo tion thatit requires the operato!"l ti zl'eliiotfeI one hand :from the shoel 'every time he' :shifts thei tooisi hin'orden tofoveroomef this fobjecff tionft has beeni proposedE heretofore `tof re versepltzhe t'ciolsy byjalmeehanism operated by a roet oaikneeievea /Butrthifs arrangement is aiseiobjeotionabieSinoeitfi'equireslthe Opf moving jthelto'ols in? toy and# out *of operative tive wehe vedgefmf the eele'jinfuifferet degne appropriate to lthe varied lcontour's-prese'nted lby1 1 Atliierent "portions tof! the ,isole 'edgei edge g. biiiifinfpeifating on fthe' 'forepart orf#Y iSS-ittf im e leliia dtaining *f @iiirggfnigidly with the tool hoider when it Olne type of burnishing or edge settmg maf @lain-.ie .ggeaewneapraiifled Wiiliatee L -N Y. .,i. .f n engage other cam faces formed on members One s in either of its operative positions.

a time, andthe faces are so `shaped as to The machine is provided with shank and 1 erah sichi'thatthe shank. tool -Iis moved finaal 'oorwexly :cu1ved rpath when: `it is in op-V er'tive positionpandl the frepartL tool 1s inmedfijniarebtiiinear path when it is in ative.position,- bhe change r inuthe path 1 of y l @vement tot 1th`e f tools' 14being.-.eiziecteda yautof lr'lati'oaiiy i as they-:are shifted Lin" the-.manner ereinaboVedescrihed; l Ri i'simlstmryato'provide edge' setting inachines with a ingenf'hokf/or. finger rest igidlyfsured' tol the vframe.` of the machine andextendi ,g yoiitvvarxjliy intona posi-tion adaoent theyedge setting iron? fsowthfatiit (erator'v-and aidl himinv Tgu'iding; Ithe 1 shoe asi he" burnishes lthe `ft'oe f1 portion. off f the i oie. -Inzburnisiing the shank portion, howver; it-iis''iireqhentlfy the vease; that the heel yof the :shoe strikes the' vfinger reati .the

i ith t ersettingf of the edge Aolo'se to' the haai. Vith some kinds of heels this interiieren'eiis hoty especially serious'a the iopei'atorio'an: ti'p heshoe sufficientivf to zillovvrthe tool to'oprate 'cioso'to-th ihee/i. `This tilting move# u"enti hoWever-throvvs the soleedge yout-of ropor engagement "''t'h'the tool. :zOn high, ieeled shoes shoes -ihavin'g heeIsthatl-are prevents l'the/fburInishfingI that portionv fof the edge close to the heel, and if this portion of=the.; edge isi-ato? he 1 burnished-i` on` fthe' edge settin'gfmaehine: it'rmust lberdonef'atfa later moved` .Thhpresentf invention aimsito pif-0+ vide .ai 'consumati-on" whereby' the :diixiulty above'ldesorib'edfmay be' avoided {Fain-d to `this: endii the Iirig'er: 'hookf is so f Varrangedi than 'may :be readily: lookedA against movement; or'l' eration' is 'pneferabiy i'ffecteduautomaticaifiy hyffthe shifting otheftiooia#andiithei'eomestruction? 'is sach.y i' that the .fngerz' :hok is iookedf when theicfoepailrt tooli is' in oprativ'e poitioxn but isi'fui'iloekedi n'de'fneeito' move when the shank tfdoil' is in1 operative positioni By: this arrangement; when; :the fh'eei. ot .Xthe shoe' 'strikes the fager hook ieiu1-ir1g`thev :hun

t 'heeiv'm'd therefore-permits the: 019+ eration of th'e sl'iankrtooly cleanup to the heel'. g iiDheffinvehtioni'raiso':cohpriset rother i feaoixA the'liresfentflinfvention illustrated in l the Haircgfieainaces only are in engagementatf ifore art tools and ithevarrangerrient isrpi'efy l j a'y 'hefigraspedvoonvenientiy by the' op` `otherfsidefoff1the I 'shioe 5 theA epexfation off frei i verging Aoi shiftiiig'vthe too'srfia repeated@ tool faplproaehes the L heel andfthus interferes uiociiedf #and permitted toi in'iovew i iThiils e111 pitohedzforvard f the finger. hook eifeetliay H.

v operation? l'after "the finger yrest haaibeen 'ref dii/fis,

. i nishin f the shankgthefhook mereiy 'moves l turtsyinluking'nertainf:detaitswii oh'strum 130 cc nloinntions and arrangements of :lucir will be litter described. and

live 'View of tbe toggle and transmitting mechanisms; Fig, 'Z is e cross sectional View taken on the linel *i1-7 Fin. 2 showing one P1 @if cooperating com surfaces for coniwf eerrinfg now to the drawingsj 2 inclieste@ the r ine that supports tire operating ortis of the machine sind in which certain 'lie ports are concealed. As betere stated,

nie-eliminan for generating the oscillatr t en l-fro niotionnecessnry to opere fllie'ledge setting tool is located in the .if tile nincliine. This mechanism con- -e s n. slinit fl ,supported insnitable beitr- -d driven in any convenient manner :1sV4

n'hieli is indicated in the drawings at y belt slnfter l muy be employed to stort cion the machine. inside the frame the u L f n 1 l u 1 f is provided with n Clisi( 9 preferably 'Hl formed integri-nl with the slinit and a crunk in* projects rigidly from snid disk. The l in rotatable inn block 12 Wlncli is mounted in a slot or slidcwny 14 nie end oi' nflever 1G, tbe lever ed on n siitionnry stud 18 4pro- *oi tbc ironie. The other end ot' fs 'nivotnliy connected by a pin which in turn is connected '1 24- to on nrn;` QG of :i bell 1o boil crunl; is rigidly scsupported by bezirnnicliine ironie. Tlieleronstitutetiie toggle lerred to. l'n liig. 1 tbe -s straightened condition zic bell crank 2S is in 'its ition. nfill be clear 'tlnit it' s rotzitoii. tlnounjli 'on :ingle oi' lll vwill Ibe moved. about its xtreme inclinedposition,und nim -ll o no boilciment;h will be moved to lonwniost positioin it tire sini-ft is. novi' r-:iulcd il' morc' tlio members i6, .22 and 32 will be r 'to .nectly the positions in one. ig'. fl further lt ruiming;v on fest and loose pulleys,

its'extrcme inclined position in the opposite direction to that previously occupied, :ind

will signin cause the iii-inf to be moved to' its lowcrmost position; and ii' the slinft is given nfs ill further rotation of 90, all of tbe parts will be moved buck to the posiftions in -wliicli they appear in Fig. 1. A single complete rotation el the shalt #1; tllcrel fore causes the Hrm 32 to nmkctwo complete oscillations or four distinct strokes or swings. li therefore tlie slmft is rotated :it :i speed of 2500 revolutions per minute the arm 32 will make 10,00() strokes.

'llie onse of the machiner is filled with lubricating oil up to n height suilicient to submerge all tliefriction surfaces, the oil level being indicated by the dotted line in Fig. 1. All oi' tbe ports just described are' therefore submerged in oil and are main- -tnincd in their most ellicient .operating con- 'llns large body of oil 1n the `bise dition. oitl'ie nniclnne also exerts .n dnmpening action on ille vibrations oit the machine frinnc,

in tlie sinne manner tlini' the vibrations of a tuning fork are dampened when it is thrust into e body or oil or other liquid. The oil muy be drown oil'by removing4 o threaded plug 33; and n remo-velde plate 35 is. provided io permit access to the toggle meclrniiism for marking repairs or renewals.

rlire oscillating motion. generated by tbe mechanism nbove described is transmitted to a. rockslmt't'M, supported in bearings :it the .bend oi the'finme 2, and through smid sinift to the onrnishiner tools, 'lhis transmission is eilectedby means of :ishort erm 36, rigidly secured to the rockslnut 3i as by n pin 38, and e rcciin'ocntirnr rod 40 lnrvinelr its ends connected to tllc firms 82 and 36. in order to avoid tlie use of friction surfaces in the irzinsmittiugj mechanism, the rod 4() is connected to the arms 32 :1nd 3G' by two joints or mmnertions oi' novel construction drsigunled in llio drawings by tbe numeral 42. lncli ottbesc joints consists ot' two lmirs of clnnipin5 r plates 44 and 4G respcctively between wliirli :irc secured n plurality of short pieces of burdened wire 4H suoli, for criminale, ns piiino wire. 'll'ic plates :ire clamped securely onto 'tlio wires by boils 5d ll'liilo tbc :irm lf2 osoillulcs in :in orc, so sliort tlnit it is substnntinlly :i slrnigrbt line, its eiiective componf'ent beine' exerted in ille dirertion oi' tlie mis olf tine rod 40, still ilu-.ro is also n. slifrlit invii'cctive component' exerted in n direction substantially pcrncndiculur to sind rod. ',lliis niso true of tbe nrm :lo ns it oscilintes about the exis of' the slui'lt -l-l. 'iflie distance between tbc clumps i4 und 413 is \'ei'y"sliort; :ind the Wires 48 :iro sul ciently still to transmit tbe reciprorntiugj movements in'ipnrted to lieso members by the bell crank 28, bei'. at the sinne timonrc suciently 'flexible to permit the slight lll-5 lateral movements of the members 32 and 36 as they oscillate ,about the axes of their v respective shafts 30 and 34. This joint has special advantages in the present machine, since it avoids the employment of oints having friction surfaces which would soon wear' sufficiently to cause an appreciable amount of lost motion. Any lost motion in the transmit-ting mechanism is, of course, greatly multiplied at the tool, and such lost motion rapidly increases with continued operation of the machine and results in increased wear of other parts of the mechanism and in excessive vibration of the entire machine traine. The joint above described avoids all of these dil'liculties, requires no lubrication or attention and is cheaper in first cost and in renewals than the usual joints. iurthermore, since these joints take up the slight lateral component'of motion of the parts 32 and 36, they prevent the lateral vibration of the rod 40 that otherwise would be produced.

The high speeds at which this machine is operated make it desirable to have the moving parts as light in weight as-is consistent with the requisite strength. For this reason, I prefer to use an aluminum tube for the reciprocating' rod 40; andas alurpanum is comparatively soft and therefore ties not hold screw threads or pins well, I have de viscd a nov'el connection shown in Fig. 5 for securing the ends of the tube 40 to the clamp members 46. This connection comprises a strong collar 52, having bulged or interiorly concaved walls, and a plug having an internally screw-threaded shank 53 and an expansible body portion 54,.,the sides of the body portion being convexly curved to correspond inI shape to the concaved curve of the interior walls of the'collar. Two saw cuts are made through the body portion at right angles to each other to give this portion exibility; The body 54 is also pro-"t vided with an axial tapered bore in which is received 'a tapered expanding member 56 having a screw threaded stem portion 58 whichengages in the threaded shank 53. The collar 52 is placed over the end of the tube 40 and the body 54 of the plug is inserted in 'the end of the tube. As thev expanding member 56 is 'forced inwardly by threading` the stem 58 into the shank 53 Vthe-sections of the plug are spread apart and expand the end of/the tube into the bulged' portion of the collarthus securing the tubey rigidly between theplug and the collar.

When the machine is running at high speeds there is some tendency for the recp` rocating rod 40 to spring' near its middle portion, particularly if it is very long; and 'Unless this tendency is resisted the vibration thus set up,vor as it is sometimes termed whipping may be become sufficiently serif ous to break or bend the rod. Trouble from yincassa this cause is effectually prevented by securing a spring 60l to the rod near yits middle by means of a clamp 62 and having the s ring project through an aperture in the rame and bentover' to form a loop With'its end secured to the frame as indicated in Fig. 1. `The spring yielding'ly resists lany tendency of the rod to vibrate laterally but does-not interfere 'with the reciprocating movements ofthe rod. This arrangement is pree'rablef to a sliding bearing or a stationary guide sinceV it absorbs no energy. A

As indicated in Fig. 2 the machine'is of the twin type and the mechanism atene end only of the head of the machine will be described, it being understoodthat this mechanism is duplicated at the opposite end. By. the mechanism above describedy a rapid rocking m'otion is impartedto the rockshaft 34. This rockshaft eXtends entirely across the head of the-machine and is provided at its end with a downwardly inclined portion 64. A groove 66is formed in the rockshaft, as shown in Figs. 2 and` 6, for the reception of a rocker frame 68 of peculiar form. The rocker frame is pivoted to the shaft 34 b'y a pin 70, and ,fa strong leaf spring 74 is interposed between the bottom of the groove 66 and the rocker frame 68; The' forward end of the rocker frame has a vertical bore formed therein in which is received @cylindrical sleeve 76 having an integral 'plate-like head 78 which rests upon the upper end of the bored portion of the rocker frame. The tool holder 80 has a long stein 82 the upper portion of vwhich is square 'and projects through 'a correspondingly shaped hole in the head 78 so that the sleeve and tool holder have a constant angular relationship. The tool holder carries removable burnishing tools 84 and 86 of usual form and has an inclined looking 'portion shapedF to engage in aflockingjaw formed on the lower end' of the forward portion of the rocker frame, asis best shown in Fig. 3.

,opera-tive position and the forepart tool 84 in inoperative position. The mechanism for shifting or reversing the tools 'comprises an actuating lever 92' lp ivoted to the lframe at 93 and'having a plate 94 located adjacent the position occupied bythe shoe being burnished. The plate 94 may `be angularly' adjusted on the lever 92 and secured in adjusted position by a` bi'olt 96.

ico .y

'-A spring 90 interposed betwcen ashoulder 'on the stem 82 and another shoulder formed A spring 98 holdsthe leverY yieldingly in the position shown in Fig. 2. The actuating device 92 is also provided with an exl tension 100 .projecting into a position above' "tern Tl c forward e Ad of said en and carries a block 182 between the tor members on pivot l 180.2. Said' bloeit has an a erture therethrough in Walle o which having the greater pordisposed on the'let hand side ot the or the holt, as seen in llifg.`-

to keep the bloeit tipped in the position shown in said fleure. The lower endrll@ olf 5 7 .I .Nc I -g me cani. ooit, 18o is redac-ed nl size ano squared to enter a soplar-e hole 112 formed in the rip-per end oF we tool holder stem 82. rllhe operation oft 'the reversing mechanism ilollotvsz-Snppose the operator to be h mfnish; the shan tool 8o; wher the-tool o at the juncture of the shawl-r and the operator ves 'the plate oniel snoe directly array fro While still holding it in hoth s. This movement rocks the lever 82 on the pin 93 and swings the earn hloclr 182 downwardly inthe arc a circle. The tlnfeadaoita the cam block acting on the threads et the cam bolt 106 d to :rotate said bolt and 'through connections. 110 and 112 to rotate stein and tool holder 80. The gjm? 88, however, locks the tool leider against such r movement.

n al

native he first result of swinging the lever 92 merci-ore .is to nuove the holder downl itedisengages the looking )avv 88. e nstant this disengagement takes place .fle tool holder ie rotated by the cam niemand 108 timer-rb an angle oi 180 ng the Soi K art tool 8e into opposition. The spring 90 acts irnnwd .stely upon 'the a :iva-l ot the holder into locking relation to the 88 to roi e the holder and lool; against rotabefore. ln practice the reversal ot the toolC is elected. The

instantaneously. le shoe sole is vnormally presented eration, of the edge setting tools in substantially a vertical l the actuating' device for tool n: 'is'floeeted behind and the shoe being burnished so is ont of contact with the n, and requires is handv from the position in iront through the earn bloolr andv n of a shoe on the "rdl arfainst the tension of. the sirin l to the position occupied.

` oit the machine. Should the operator push against the linger hook' With the shoe instead ot against the plate 94 he would still eect the reversal of the tools exactly7 as before; and it is contemplated that the reversing mechanism may be actuated by striking the finger hook with the shoe instead ot hy striking the plate 94. Coperating stops 111 Aand 113 disposed respectively on the actuatingl lever and frame limit the movement of the lever about its pvot. .j l

have the shank tool oscillate `in a curved path and the iorepart tool ocillate in a' rectilinear path. In order to effect this re 11G and is provided at its forward end with a downwardly inclined portion having a flat cam face 118 and a curved cam face 120. The bar 115i is normally stationary, but can yield' against the action of a strong spring 122 surrounding a bolt 124 projecting from a portion of the frame. The tension of said Aspring may be adjusted by a hand nut 126. The rocker 'trame 68 is 'provided with a curved cani :tace 128.. 1n the positions in which the parts are shown in Fig. 2- ,the cam face 120 is engaged by a sleeve head 'a' 8 which is thick enough to hold the cam :faces 118 and 128 outof contact with each other. This portion of the head 7 8 has a plane upper surface that forms a cooperating cam face 'for the face 120. The xnernher 7 8 is, therefore, for the purposes of this mechanism, a cam plate. The rockshai't Sli, frame 68, plate 7 8, tool holder 80 and the tools 8e and 86 are all locked rigidly together for oscillating movement. lThe 74T: holds the rocker frame upvardly so that as 4 plate 78 'are oscillated the flat surface of thel plate is at all times held in engagement with the curved cam ace 120. Consequently While the parts are in this relation the shank tool 86 is caused to oscillate in a curved path. lf the tools are now reversed by the mechanisrnabove described, the portion of the plate 78 previously in engagement with. the cam face 120 Will be swung .out of engagement with said face and a thinner portion'129` of said plate will be moved into the position opposite the cam 120. rThe spring 74 now operates to force the cam face 128 on the rocker frame into contact with the plane surface 118 on the 'com bar 114:. 'llhe com face 128 has the form of a portion of a cylindrical surface nishing face of the vtorepart tool. As'f'tvlle surface 128 is rocked in contact Withlth'e surface 118 the axis of the surface 128, and therefore 'the hurnishing face ot the for@ part tool, Will'always remain atta constant" distance Jfrom the tace 118, and as the tace its prev1ously"stated, itis preferable to snlt a cam bar 114 is pivoted to the frame at" the axis ot which passes through the bur-iY portion ot' the the rocker frame and 118 is a plane surface the forepart tool? will oscillate in a rectilinear path By the above described mechanism the path of travel of the tools ris changed automatically as one tool or the other is' thrown into operative position. rIhe mech-` anism is very simple in construction and as the cam faces merely have a rocking or roll-` ing engagement with each other, the wearv of these parts is practically negligible.

r1"he spring 122-is provided for the pur-z pose of enabling the tools to yield against: the pressure of the work; and the springg is made adjustable so that its tension may' be varied to suit the character of the work.- lt is obvious that it is necessary to holda heavy tliick-soled shoe up against the tool4 with much greater pressure, in order to bur-t nish the edge properly, thanis necessary in burnishing a light thin-soled shoe, such as a womans shoe.

ments of the different kinds of slices.

The finger rest or hook 130 is providedl with a gas passage 132 and a burner tip: 134, thus constituting a combined fingerl A plurality ofA hook and gas burner. grooves 136 are formed in the rear end of said hook to facilitate its connection byy means of tubing 138 with a controlling cock` 140. The hook 180 is longitudinally adjustable iii a supporting arm 144 so that it inayl be positioned properly with reference to the burnishing irons. A pin 146 pivotally supports the arm 144 on the actuating lever 92! and an aperture 148 is formed in said lever, through which' the finger hook extends andi -in which it may have a limited swinging; movement about the pivot 146. The fingerl hook is grasped by the workman as he burnishes the toe portion of the sole and aids him in guiding the shoe properly during eration on this portion of the shoe. lt is necessary therefore that the hook shall be lookedy against movement during this operation.

For this purpose the arm 144 is provided" with an inclined slot 150 having vertical: shoulders 152 formed in the walls of the slot anda locking plate 15S extends through' the slot and cooperates with the shoulders in a nia-nner presently to be described. The

plate 15S has a cylindrical shank portion 154: which is received in a 'correspondingly' locked and free to move. But if the plateA The adjustment ,of thespring here provided permits the operatory to vary the pressure to meet the require-I is tilted about the axis of the shank 154 into the position indicated in dotted lines in Fig. 4 the arm 144 will then 'be locked by the engagement of the plate 158 with "the locking shoulders 152. The position 'of "the locking plate in the slot is controlled by twoiprojeci tions 160 and 162 provided respectively on opposite ends of the l tool holder' 80. It should be noted that the projection 160 is in a lower plane than the projection 162, and thatV the former is on the end of the holder that carries the forepart tool while the latter is on the end that carries the shank tool. When the shank Vtool is in operative position therefore the projection 160 is in contact with the plate 158 and holds it in its tilted orineffeetive position. The ngerhook at thistime is therefore free to move when the heel of the slice strikes it during the burnishing of the shank. In order to substitute the forepa-rt tool for the shank tool the actuating lever 92 is swung downwardly as previously described and this movement carries the locking plate away from the projection 160. The tool holder is then rotated'into its reversed position and as the lever 92 is returned to its normal position by the spring 98 the right hand side of the plate 158, as seen in Fig. 4, will contact with the projection 162 and be tipped into the position indicated by the dotted lines in said figure. The arm 144 and finger hook 130 are now locked against movement. When the shank tool is again swung into operative position the projection 160 will tip the plate 158 back into its inclined position.

Having described my invention what I claim as new and desire to secure by Letters Patent of the United States is:

1. A machine of the class described having a machine frame, an edge setting tool arranged near the head of said frame and means for operating said tool, said means comprising mechanism located in the base of said frame for generating rapid to and' fro movements, and mechanism including an upright rod arranged to reciprocate in substantially a straight line for transmitting said movements to said tool.

2. A machine of the class described comg prising in combination a machine frame, a rock shaft arranged at the head of said frame, a burnishing tool operated from said rock shaft, mechanism located in the base of the framefor producing rapid to-and-fro movements, means including a reciprocating rod for transmitting motion from said mechanism to said rock shaft and lmeans for preventing the lateral vibration of said rod.

e. A machine of the class described comiio iomega@ of said frame, a hurnishin tool connected with said roel:- shaftto be riven thereby, a drive shaft in the base of the frame, a toggle mechanism operated by said drive shaft and driving connections between said mechanism and said rock shaft, said connections. in-l cluding a reciprocating rod and a joint-at each end oil said rod arranged to ermit slight lateral movements of the ro relatively to the parts connected thereto.

5. A kmachine of the class described comin combination' `a rotary shaft, a

prisin crank in secured to said shaft; a block ro' tatable on seid nin, a to'ggle lever having a, slidevva in Which-said loclris received, aA

toggle link pivotally connected to saidv lever a rock shaft operatively connected with sai toggle mechanism' and a lonrnishing1 tool ofperated from said rock shaft.

6. A machine ofthe classadescrihcd com prisingy in combination, a machine frarneya rotary driving shaft, a crank pin secured to said shaft, a block rotatably. mounted on l said pin', a toggle lever pivoted intermediate its ends and having; a slidevvay 'formedin one end in which said blcclr isa-received, a toggle link pivotally connected to the other end of said lever, a bell' crank lever havin one arm pivotally .connected to said link, a l of said arts' being arranged in the base of the mac ine frame andsubinerged inoil, a

rock shaft arranged at the head of said frame,

an arm rigidly securedl to said neck. shaft,

a reciprocating rod Ahaving its ends connected respectively to said arm and to the other arm of said bell crank lever, such connectionl at cach end ofthe rod being ei'ected through ing devices a joint comprisinc tivo'clam and a plurality o? short sections' of hardened wire connecting said devices and hav- .Y ing; their ends rigidly secured hysaid clamp- 4infr devxccganda burnishlng tool 4.operated h i u from said roclr shaft. .A

7. A bnrnishing machine. comprising in combination, a burnishingtool and means for imparting"- rapid conrad-fro movements to said tool, 'said means`- including' a joint comprising two clamping devices and a connecting member secured between said clampino' devices said member being composed of a plnralityioi" hardened Wire..

8. A burnishing machine' comprising, in combination, a rocker frame, a tool holder, a plurality of edge burnishingf tools carried by said tool holder, said holder bein@P mount Athe shoe when 'in h'ernishi'ngr L arranged to be operated by mov r nient relativel* thereto to c -while holding;l the shoe rir 1 and While standing in' thel jnormallyoccupiee While he.

v`tool holder arranged to yinteri said frame and holder to each einer uprising incombination arracher Jtool holder roclnng' with hat mot/ah .axis, means for lorkingf said'holde `ricd by said holder, and :manually o irictional -ennirgement ,with nach et holder against rotation relatively to ed to rock with but errang-jed to have 1r tive movement relatively to said, means for positively ell'ecting Step rotation ofi said 'tool holder, including a device located in close to and oppositethe tread face oli shoe being burnished` to acinate sain 9. A.. burnishing machine, f" combination, a rocker :trame a lurality of tools carriy ho der being mounted to a. frame and arranged to have a means for loosing too said rotativemovemcnt, and connections between s holder whereby the ac effects a rotative nievein holder relatively to i lever having 4al Apart toenemen position occnpied by nishing position to enabler-ane to operate said lever hy against it and thereby-to ried by said tool holdenv 10a-A machine el the class dere.. arising in combination a roc frame, means for positively sind members to unloclr means` for changing' ,the angular ll. A machine of the class tive to `said frame 'into dilere positions, and means forl pos' said'holder from one operativf another, said frame. and he ranged to interlock witheach r ni; one

certain positions. i 5

12. A; machine of the class descri prision; in conilo'ination a.v nocif; sh; holder rocked by said 'share' ont for movement (relatively.- thereto the latter rno'vemenha` plnralityot tools i.

,mechanism includingy a. paire?? devicefl'ecting lirstnn Unlocking; niovenie thcreaft a pivot-al movement of sa holder to move one tool ont oit' and another into operative position.

'13. Aiv hurnishingrr machine comprisin combination rocker frame, a .tool if. rotatable thereon, Jmeans @idr locking@ frame, an actuating device hace-.ted `close to the position occnpicdfhy the sole ol the shoe i ,lai

land to rotate the holder.

14. A machine of the class described, comprising in combination, a rocker frame, a tool holder rotatable thereon, a plurality of edge setting tools carried by said holder, means for locking said holder against rotationy relatively to -said frame, and positively l acting mechanism for unlocking said holder and for rotatingv said holder. to shift the tools, said mechanism comprising an actuating device located close to and opposite the posit-ion occupied by the tread face of the sole of the shoe -When in burnishing posltion and so positioned with relation to the adjacent parts of the machine as to afford an unobstructcdvpath for a direct bodily movement of the shoe against said device to operate said mechanism.

15. A machine of the class described com` prising in combination a rocker frame, a tool', holder, means for locking saidholder against angular movement relatively to said frame and positively acting` "meansjfor un` locking said `holder from said frame and for thereafter. eilecting a positive angula r move- .ment of said holder relatively to the frame.

16. A burnishing machine having a plurality of burnishing Stools mounted for movement toward and. from a specified point, in c ombination with mechanism for moving said tools toward and from said point,'said mechanism including an actuating device ont of contact with the shoe during the burnisl'iing operation but located close to the position occupied by the tread .face of the sole of the shoe being burnished and arranged to' be operated'by a bodily movement of the shoe out of burnishing position and into enga gement with said device.

17. A machine of the class described comprising in combination a rocker frame, a tool holder rotatable thereon, an operating lever pivoted to the frame of the machine, a member arranged to engage loosely the tool holder and a lsecond member carried by the operating lever and cooperating with the first member to rotate said holder.

18. A machine of the class described comprising in combination a rocker frame, a t il holder rotatable thereon, said frame and holder being arranged to interlock di reetly with each other, means for yieldingly `'holding said members in their interlocking relation, an actuating `lever pivoted to vthe 'frame of the machine, means for yieldingl holding said lever in position to be a'ctuate coperating stops 'for limiting the movement of said lever, a block pivotally mounted on said lever and having a threaded aperture formed therethrough, and a threaded bolt eX- tending through said aperture and arranged to loosely engage a stem projecting from the tool holder, whereby when said lever is actuated the tool holder is unlocked from said frame and is rotated Lrelative to the frame.

19. A burnishing machine comprising va horizontal rock shaft having a downwardly inclined end portion, said shaft being provided With a deep groove extending back- Wardly from the end of the shaft, a rocker frame positioned in said groove and a tool holder operatively associated With said rocker frame.

20. A burnishing machine having in combination avbnrnishing tool and means ina, cluding a yielding cam for imparting to said tool rapid to-and-fro movements in a rectilinea r path. y

21. A burnishing machine having in combination, a burnishing tool, mechanism for imparting to Asaid tool rapid to-and-fro movements and means including a yieldingly supported cam for controlling the path of movement of the tool.-

22. A burnishing machine having, in combination, a burnishing tool, .means formoving the tool, mechanism for causing said tool to move in a predetermined path, l said mechanism comprising a cam and a member rigid with the tool engaging said cam, and an adjustable spring bearing on said cam.

23. A burnishing machine having, in combination, a tool holder movable into different operative positions, means for vibrating said holder in a curved path when it is in one Josition and means for vibrating said holder 1n a substantially rectilinear path When it is in another position, the last mentioned means including a yieldingly supported cam plate.

24. A burnishing ymachine having,in combination, a tool holder, a plurality of tools supported on said holderin ixed relation to each other, means for moving said tools in to and ont of operative position, means for causing one of said tools to be vibrated in a curved path when it is in operative position and means for causing another tool to be vibrated in a substantially rectilinear path When it is'in operative position. I

'25. A burnishing machine having, in combination, a tool holder arranged for movement in to dili'erent. operative positions, a shank tool and a forepart tool carried by said holder and supported in fixed relation to each other, means l'or vibrating the shank tool ina curved path when it is in operative position and means for vibrating the fore- .part tool in. a rectilinear `path When it is in operative position. A

26. A burmshing machine having, in combination,.a tool holder5 a plurality of tools` carried .bv .said holder-end means includingv cam members having :soiling engagemen; with each other for imporiirig to said hoider rapid to-mid-ro movements in paths; of efi 'fer-enrl euri/aimee.

27. A hurnishing nmohiue Comprising.. in. combination, a rigid tool hoider, e piuraiiiiy of tools Carried; by said hoider, menne for giving said holder 'oehd o iriovef ments in paths of dii'ereni; ourvainures :md means for yieldihgiy resisting the progenie of the Work against `the tooie.

2S. A hurnishing machine having, in emohihitiona a. bmnishing tool, deviceC 'for iin-- parting to said too] rapid to-ami o movements, mechanism 'for Controlling he wh of movemenh of said tooi :md means ed] throughA said meehanisn'x for yielding@ sisting the pressure of the Work egein'et tool. f

29. A hurriishing machine comprising7 combination, a. hurnishing Jmooi, meehoii for imparting to Said ooi rapid leo-fiedf movements, means for @elisir said Leoi. ee move in a predetermined path, the teoi being arranged to have a constant relation, to :means Whiie in operative position :1mi mem for yieidingiy resisting the preeeure o; Work against the `Zool 30. A. hurnishimg moehine comprising e' tool beider arranged for movemenrinto 'diiferent operative posiaionsv meehaiiisrri r imparting to said hoider repi nto-:m5 'i movements, means for causing said. he? to move in pahe oi; ffer when ir, is in different operefgive poeieioris., the holder heiiig arranged have eeriemr'.

relation ibo simi. mee. e Whie .oempy eiher of .its operative poeh-ions for yieldingiy resisting ehe preeeure Work against he roei hoher.

3l. hurnihing meeii'ii eomhinetion e oo hoi ereh operative poe" parting te seid hooer m'pil @o L movemene and meme hrehifiiog e. efr ing e pluruiiy of eem het ero .i o imo operation alternately *go Change pew). of travel of ehe holder when the hoi'i :f ie shifted from one position to another., 32. A hurniehirig machine having in eemhilmtion n, tool holder, mechanism for imparting' to mid holder repifi to-am. i rnoven'ients and means eomprieing devices having :i phu'niity oi paire or Cooperating (zum .faces for varying; rho path of moi/eh of said holder, said menus heihgg von Strueted and arranged that ene pei? o'f .ov faces may he thrown out o!x i gagement and another pai engagement to change the path of mov, of the holder.

33. A hurnishing machine eomprisiug, eoiirhirmioh. e, pimahg-j] oi? mroiS-shiiog i orrahged'ror movement i'iiio e." oui? o erative position, meehorfem f hrijmrey meer).

'paire rolling h :ii-id. menne meot .e he

locking said rest against movement or unlocking," the same according to the tool` that in operative position.

259. A machine of the class described comprising, in combination, a shank tool and a orepart tool movable in to and out of operative position, a linger rest and means -nf'hereby said rest is automatically locked against movement when the forepart Ytool is in oj'uerative position and is automatically unlocked when the shank tool is in operative posit-ion.

40. A machine of the class described comprisinp,` a movably mounted linger rest, a plurality of movable tools and means controlled by the position of the tools for automatically locking;a said rest against movement in certain directions.

41. A machine' of the class described. comprising, in combination, a movably mounted finger hook, a device arranged to lock said hook against movement, a movable tool holder and means moving1 with said holder for operating said device to leek dr unlock the hook. j

A machine el. the eclass described com prisin in combination, a movably mounted linger hook, a' movable tool holder and means operatesji by the tool holder for successively locking,Y said hook against movement and unlocking the same'.

13. A machine of. the class described comprisme', in combination, a swinging arm, a finger hook carried thereby, a rotatable tool holder, a locking' mechanism arranged to lock said arm rigidly against movement and means mounted on the tool holder for opera ting said locking` mechanism to lock or unlock the hook. y

44. A machine of the class described com- \\prisin0f, 'in combination, a moval'il'c linger hook, atool holder movable into dili'erent positions and means controlled by said holder for locking said hook against move'- ,jrmment or releasingn the hook` to permit it to* more according the holder.

A lunnishing;- machine comprising,V a n'lovably mounted finger hook, means 'tor lor-icing said hook agraiilst movement and means under: the control o't the worlnuan ttor operating said locking means to lock or unlock the hook. 1

f-l-G. burnishing machine comprising a linger hook, a pivoted arm carrying said hook, said arm having an aperture formed to the position occupied by therein with locking shoulders iol-med 1n' the walls oi the aperture, a tilting'locling plate projecting through said aperture and arranged to engage said shoulders, a r0- tatable tool holder, a shank tooland a forepart tool carried by said holder and locking projections provided onthe holder and arranged to engage said plate to tilt the plate into engagement. with the locking shoulders when the forepart tool is in operative position and to tilt the plate out oi2 locking engagement with` said shoulders when thc shank tool is in operative position.v

4:7. A burnishing machine comprising a rocker frame, a tool holder rotatably mounted on said frame, a shank tool and a lforepart tool car.ied by said holder, an actuating lever for causing either of Ysaid tools to be rotated into or out of operative position, a finger hook, an arm pivotally mounted on said actuating lever and adjustably supporting said finger hook, said arm having' an aperture formed therethrough with lockingshoulders formed in the walls of the aperture, a locking plate projecting' through said aperture, said platehaving a cylindrical shank portion received in a correspondingly shaped socket in the actuating lever, and locking projections formed one on each end of said tool holder, one of said pro- 'ections beine arranlred when it contacts with said plate to tilt the plate into engagement with the locking shoulders and the other projection being arranged when it contacts with the plate to tilt thc plate out ot locking engagement With the shoulders.

4S. A machine ot the class described, comprising in combination7 a rocker frame, a tool holder rotatable relatively to sa'id frame butarrang'ed to rock therewith, means 'for locking' said holderiagainst rotation relatively to said iframe, an actuating device, a member arranged to engage the tool holder to turn the same, and a second member carried byA said device and constructed to engage and move the lrst member to unlock said holder and thereafter to rotate the holder.

ln testimony whereof I have signed my name to this specification in the presence ot' two subscribing witnesses.

FREDERIQK. M. FUltBllR.

lVitnesses Amrum: L. RUSSELL, JouN H. MCCREADY. 

